I must first of all say that I did not finish this book, through choice of my own, so my review will not be a reflection of the entire novel, only the part that I did read. I had high expectations for Hidden, mainly because I know a few people who had really enjoyed it but, sadly, this wasn't the case for me. Maybe it's because I had such expectations that I didn't like it, but I guess we'll never know.From the start, it is evident that Ebony is different. Even she knows it, but she doesn't know why. Why can she run faster than everybody else? Why does she have violet eyes? Why does she have the ability to heal? These were questions that were answered fairly early on in the book so the reader isn't left guessing, something that I really liked about the novel.Narrated by Ebony and Jordan, both of our protagonists, we got to see this book from a multiple perspective. I liked that because it meant that we got to see a larger part of the story rather than a tiny part if there were only one narrator.I haven't read a lot of books featuring insta-love but this is one of the few that I will be adding to my insta-love shelf. I've now found that insta-love bugs me and I won't be reading another book with insta-love featured in it for a long time.I loved the concept of this novel and, although I've read quite a few books with a similar plotline, this one had many unique aspects.I found the characterisation very poor and wanted to scream at Ebony and Jordan on numerous occasions. Jordan irritated me more and more as the book progressed. This was one of the reasons why I put the book down. Whenever I pick up a book I want to be able to relate to the characters and feel something towards them, whether it be sympathy or hate for an antagonist. I didn't, however, feel any of those things for either Ebony or Jordan.I don't think I'll be reading anything else written by this author because I think I'm slightly too old to be reading this thing. It felt forced to me and I wasn't comfortable with reading it. I do understand, however, why it may appeal to other people.This book was sent to me for review by the publisher via Netgalley